#include "wombats.h"
#include <cstdio>
#include <set>
#include <algorithm>
#include <cstring>
#include <vector>
using namespace std;
template <typename T>
using ve = vector<T>;
int r, c, h[5000][100], v[5000][100];
int dp5[5000][100];
int ans_5[100][100];
void calc_sub5_dp() {
for (int ii = 0; ii < c; ++ii) {
/* find answer for (V1, V2) where V1 = ii */
memset(dp5, 63, sizeof dp5);
dp5[0][ii] = 0;
for (int i = 0; i < r; ++i) {
if (i > 1)
for (int j = 0; j < c; ++j)
dp5[i][j] = dp5[i - 1][j] + v[i - 1][j];
static int pre[102], suf[102], ph[102]; /* annoying ahh math */
ph[0] = 0;
for (int j = 0; j + 1 < c; ++j)
ph[j + 1] = ph[j] + h[i][j];
pre[0] = dp5[i][0]; /* - ph[0] = 0; */
for (int j = 1; j < c; ++j) pre[i] = min(pre[i - 1], dp5[i][j] - ph[j]);
suf[c - 1] = dp5[i][c - 1] + ph[c - 1];
for (int j = c - 2; j >= 0; --j) suf[i] = min(suf[i + 1], dp5[i][j] + ph[j]);
for (int j = 0; j < c; ++j)
dp5[i][j] = min({dp5[i][j], ph[j] + pre[j], suf[j] - ph[j]});
}
for (int jj = 0; jj < c; ++jj) ans_5[ii][jj] = dp5[r - 1][jj];
}
}
void changeH(int P, int Q, int W) {
if (c <= 100) {
h[P][Q] = W;
calc_sub5_dp();
}
}
void changeV(int P, int Q, int W) {
if (c == 1) {
sum += W - at[P];
at[P] = W;
} else if (c <= 100) {
v[P][Q] = W;
calc_sub5_dp();
}
}
void init(int R, int C, int H[5000][200], int V[5000][200]) {
r = R, c = C;
if (c > 100) return;
for (int i = 0; i + 1 < r; ++i) for (int j = 0; j < c; ++j)
v[i][j] = V[i][j];
for (int i = 0 ; i < r; ++i) for (int j = 0; j + 1 < c; ++j)
h[i][j] = H[i][j];
calc_sub5_dp();
}
int escape(int V1, int V2) {
return ans_5[V1][V2];
return 0;
}
Compilation message
grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
15 | int res;
| ^~~
wombats.cpp: In function 'void changeV(int, int, int)':
wombats.cpp:55:3: error: 'sum' was not declared in this scope
55 | sum += W - at[P];
| ^~~
wombats.cpp:55:14: error: 'at' was not declared in this scope
55 | sum += W - at[P];
| ^~
